Futures for 49ers’ free agents

Delanie Walker had three catches for 48 yards in the Super Bowl, but the 49ers‘ tight end did far more than serve as a pass-catcher.

Just ask Ravens safety Ed Reed.

On Frank Gore’s 6-yard touchdown run in the third quarter, Walker, the lead blocker, dived at Reed’s thighs and erased him from the play with a textbook block as Gore galloped into the end zone untouched.

The play highlighted Walker’s versatility, which has prompted Jim Harbaugh to term him the team’s Swiss Army knife. Since Harbaugh arrived in 2011, Walker has lined up at wide receiver, fullback, running back and right tackle, and he covers kickoffs.

A wide receiver in college, Walker has developed into an excellent blocker during his seven seasons in San Francisco and also established an excellent rapport with Colin Kaepernick this past season.

In Alex Smith’s nine starts, Walker had seven catches for 89 yards. In Kaepernick’s 10 starts, Walker had 19 catches for 335 yards, and Kaepernick had a 112.6 rating when targeting him.